#006661
Closest named color: Dark Aqua (#05696B). oklch(46% 0.08 188.9), rgb(0, 102, 97).
Aa
White text reads best on this color (6.83:1).
About this color
#006661 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 46%, its chroma 0.080 and its hue 189°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Aqua (#05696B), ΔE 0.017 away. White text reads best on it, at 6.83:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.080) |
| Temperature | cool |
| Nearest name | Dark Aqua (#05696B) |
| Black text | 3.07:1 |
| White text | 6.83:1 |
Values
| HEX | #006661 |
| RGB | rgb(0, 102, 97) |
| HSL | hsl(177, 100%, 20%) |
| OKLCH | oklch(46% 0.08 188.9) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #006661 | 6.83:1 | AA | Lc -88.1 | Fine for body text |
| Black text on #006661 | 3.07:1 | AA large text | Lc 21.0 | Dividers and decoration only |
| #006661 text on white | 6.83:1 | AA | Lc 83.1 | Fine for body text |
| #006661 text on black | 3.07:1 | AA large text | Lc -18.9 | Dividers and decoration only |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 700.
-
Step 50
50
#F2F7F6
oklch(97.2% 0.005 183)
-
Step 100
100
#E2ECEB
oklch(93.5% 0.011 189.8)
-
Step 200
200
#CADEDC
oklch(88.5% 0.022 189.5)
-
Step 300
300
#A5C9C5
oklch(80.9% 0.039 188.1)
-
Step 400
400
#73ADA8
oklch(70.6% 0.061 189)
-
Step 500
500
#499993
oklch(63.1% 0.079 188.8)
-
Step 600
600
#24837D
oklch(55.5% 0.086 188.8)
-
Step 700
700 (this color)
#006661
oklch(46% 0.08 188.9)
-
Step 800
800
#165A56
oklch(42.6% 0.066 189.2)
-
Step 900
900
#1B4A47
oklch(37.6% 0.051 189.5)
-
Step 950
950
#112C2A
oklch(27.1% 0.033 189)
#006661 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #5F6061 | 0.084 |
| Deuteranopia (no green cones) | #535762 | 0.079 |
| Tritanopia (no blue cones) | #006964 | 0.010 |
| Achromatopsia (no color) | #5B5B5B | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #006661
#006661
oklch(46% 0.08 188.9)
- #7E444F
#7E444F
oklch(46.1% 0.08 8.6)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #006661, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aqua #05696B ΔE 0.017
- Dark Green Blue #1F6357 ΔE 0.017
- Petrol #005F6A ΔE 0.031
- Dark Aquamarine #017371 ΔE 0.043
- Deep Turquoise #017374 ΔE 0.045
- Deep Teal #00555A ΔE 0.055
- Spruce #0A5F38 ΔE 0.062
- Pine #2B5D34 ΔE 0.065
Use #006661 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.